[24.21] RHESSI Observations of Galactic Nucleosynthesis

D. M. Smith (U. C. Santa Cruz), C. B. Wunderer (U. C. Berkeley)

The Reuven Ramaty High Energy Solar Spectroscopic
Imager, while designed to study solar flares, can also
intercept photons from any direction in the sky above about
100 keV, since its germanium detectors are unshielded. Using
occultation by the Earth, we have observed the Galactic
lines of 26Al and 60Fe with RHESSI (the latter at
marginal significance). We will report on the status of
these ongoing observations and on the sensitivity of RHESSI
to the positron-annihilation line from classical novae.